I had a big problem yesterday - screen froze and no taskbar icons would respond. Coincided with a failed attempt at a system restore for other reasons. had to restart a number of times - eventually seemed to settle down. ( Free Avast with W7)
*"For those using Avast Anti-Virus, free or paid for, please take care if updating the programme (not the virus definitions).
There have been occurrences of high CPU usage (100%!) after a recent programme update. See the link below to the Avast Forum for more information."*
I'm using Windows XP Pro and even unloading Avast completely and reinstalling a later version does not cure my problem. Perhaps a system restore will solve the problem, if not a Image restore may be necessary.
There does not appear to be much progress on this problem from the Avast Forum.